ReadonlydurationReturns the finite lifetime in milliseconds, or undefined when
infinite.
ReadonlyisReturns true when the quote lifetime is infinite.
StaticinfiniteReturns a TTL under which quotes never expire on their own.
StaticwithinReturns a TTL under which quotes expire durationMs after each push.
durationMs is a finite, non-negative duration in milliseconds.
Fractional milliseconds retain nanosecond precision.
Throws RangeError when durationMs is negative, non-finite, or too
large to represent as a native duration.
Quote lifetime policy: infinite, or finite within a duration.